CN1798132A - Method for implementing wireless route between master-slaves device set based on IGRS protocol - Google Patents
Method for implementing wireless route between master-slaves device set based on IGRS protocol Download PDFInfo
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Abstract
The invention is for use in providing a route mechanism in master and slave device groups to implement data transmission and resources sharing between all participated devices without adding hardware router. It is based on IGRS protocol and building communication channel between two devices. When the source device sends data to destination device, the interconnecting device determined by optimal path must be the device in the master and slave device group. The device routing table and the destination device parameter table are set in each device based on IGRS protocol.
Description
Technical Field
The invention relates to a wireless routing implementation method based on an IGRS (intelligent Grouping and resource sharing protocol), in particular to a method for implementing data transmission between all master and slave equipment groups in a wireless network without configuring special routing equipment.
Background
With the development of internet and communication technology, wireless network technology for realizing intelligent interconnection, resource sharing and cooperative service among network internal devices has become a trend. Particularly, with the use of the 802.11 protocol, various wireless network devices can be automatically discovered in a certain area, and can acquire resources of the other side according to respective operation rights. The data transmission distance between the existing wireless networks is limited because the wireless network devices based on the 802.11 protocol cannot directly communicate due to the long distance, and a general solution is to arrange a plurality of wireless relay and routing devices in the network, so that the network device cost is high and regular maintenance is required.
The IGRS protocol, namely intelligent Grouping and Resource Sharing protocol, is a network communication protocol standard which is primarily used at present, network equipment which is installed with the IGRS protocol can automatically discover and share resources, but the precondition is that the connection of a physical layer among various network equipment must be realized, and the existing IGRS protocol does not support a network routing mechanism. The wireless network based on the IGRS protocol can realize the management mechanism of the device group, and data communication and routing among a plurality of device groups can be realized by other hardware routing devices.
In practical applications, especially in a temporarily built network system, there are not enough routers and servers to realize the connection of all wireless devices, which greatly limits the data communication and routing between device groups. Therefore, in the existing wireless network, direct data transmission beyond the effective distance is still a problem to be solved.
Disclosure of Invention
The invention provides a method for realizing wireless routing between a master device group and a slave device group based on an IGRS protocol, aiming to solve the problems and the defects and provide a routing mechanism between the master device group and the slave device group, so that data transmission and resource sharing of any interconnection device can be realized without participation of hardware routing equipment, even if sending equipment and receiving equipment are not in the same master device group and slave device group.
The method for realizing wireless routing between the master equipment group and the slave equipment group based on the IGRS protocol is based on the fact that a communication pipeline can be established between the two equipment.
Based on the wireless routing implementation method, in the process of sending data information to the target device by the source device, the switching device determined by selecting the optimal path must be a master device in the master-slave device group rather than a slave device.
Meanwhile, each IGRS protocol-based device is configured with a "device routing information table" and a "target device parameter information table". Wherein,
the format content of the device routing information table is as follows:
the target device: listing all device numbers in the network that can be reached through the routing function;
switching equipment: the source device sends information to the target device, and the information is transferred through a plurality of routing devices. In the routing path, the device that communicates with the first of the source devices is defined as the transit device. In the process of sending information, the switching equipment is determined by selecting the optimal path. The switching equipment is the main equipment in the main equipment group and the other equipment in the routing process is also the main equipment;
a routing path, defining all paths from the source device to the destination device. The source device can select the optimal path to carry out network communication through the routing path;
the number of routing times, the number of routing times that the source device needs to be transferred to the target device. The 1 representation can be reached directly. Multiple representations must arrive through the routing device.
The format content of the target device parameter information table is as follows:
device code number, DeviceID;
the device name: DeviceName;
URL of device detailed description information;
type of device: DeviceType;
a version number of the IGRS version the device is compliant with;
the IP address of the equipment and the port number of communication;
device restart flag: restarting and accumulating the equipment once;
the number of master-slave device groups to which the devices belong: if the value is 0, the device is not in the device group;
an ID list of a device group in which the device is located;
whether the device is a master device: 1: master device, 0: a slave device.
The method for realizing wireless routing between the master equipment group and the slave equipment group based on the IGRS protocol comprises the following specific steps:
first, selection of a target device.
And acquiring the IP address and the equipment description of the target equipment according to the parameter information table of the target equipment, and providing information for the construction of the routing data packet.
And secondly, constructing a corresponding routing data packet.
The data transmitted specifically is stored in the routing data packet and transmitted.
The generation rule of the routing data packet is that when the device sends information by using a routing mechanism, the wireless network realizes network transmission of data by adopting a TCP/IP protocol, the routing data packet is the text of the TCP packet, and the target IP address in the TCP and the IP packet is set as the IP address of the switching device of the source device.
The structure of the routing packet is such that,
the routing equipment can know the routing data packet by judging the packet header after obtaining the data packet;
a source device IP address, an IP address of a device that sends data;
a target device IP address, a device IP address at which data is finally received;
data text content;
forwarding times, the forwarding times of the routing data packet;
the check bit occupies 2 bytes, the calculation method is that the IP address of the source equipment, the IP address of the target equipment, the data text and the forwarding times are carried out, the check bit is hexadecimal, and overflow is carried out when the check bit is full;
packet end, data packet end flag.
And thirdly, determining the optimal routing path.
And inquiring a routing table of the source equipment according to the code number of the target equipment.
There are many routing paths from one device to another, and the optimal path is selected by,
preferentially selecting the path with the least routing times;
if the data are the same, the wireless network bandwidth of the passing routing equipment is detected, the lowest bandwidth of the routing equipment of the two paths is compared, and one path with the higher bandwidth is preferentially selected.
If the data is still the same, the sending equipment randomly selects the data.
And fourthly, determining the final forwarding equipment.
The sending information needs to be forwarded by the routing equipment, the source equipment sends the data packet to the switching equipment, and the source equipment does not stipulate the next switching equipment, but the previous switching equipment determines the next switching equipment according to the following rules.
The selection rule of the switching equipment is that for the directly arrived connection, the target equipment is the switching equipment;
if only one switching device is available, the switching device is directly adopted;
if there are multiple transit devices, this requires selecting the best routing process according to the rule, and the transit device of the best routing process is the best transit device.
And monitoring whether a pipeline required by a user can be established between the source equipment and the forwarding equipment, and if not, selecting other switching equipment.
And fifthly, forwarding the data.
And establishing a communication pipeline based on an IGRS protocol between the two devices.
The source equipment determines the optimal path and the switching equipment through the equipment routing information table and sends the data packet to the switching equipment;
the switching equipment analyzes the data packet, obtains the forwarding times and the address of the target equipment, and reconstructs the data packet after adding one to the forwarding times;
inquiring an equipment routing information table of the equipment, acquiring an optimal path reaching the target equipment and the next switching equipment, and retransmitting the data packet;
and so on until the target device is reached;
when the data of the forwarding times is larger than a certain value, the data is proved to be in a loop-locked state in the wireless network, and at the moment, the routing equipment discards the data packet and sends error information to the source equipment.
And sixthly, receiving the data by the target equipment.
After receiving the routing data packet, the target device judges whether the IP address in the routing data packet is the IP address of the device; if yes, stopping forwarding and processing data; if not, forwarding continues.
And step seven, the target equipment feeds back corresponding information.
After receiving the information, the target device sends back corresponding feedback information to prove that the routing data packet is correctly received.
The data feedback process of the target device is the same as the process until the source device receives corresponding feedback data information.
The method for realizing the wireless routing between the master equipment group and the slave equipment group based on the IGRS protocol adopts a method for regularly updating two information tables and online inquiry for new online equipment which is added into a wireless network for the first time and equipment which is online again after being added into the network and offline. Which comprises the steps of (a) preparing a mixture of (b),
1. a routing list of subscribing master devices.
The new device determines whether there is a master return. If the master device returns, sending a command for subscribing the routing list in the master device to the master device, wherein the command comprises all slave devices in the device group, all devices in other master-slave device groups and single devices;
after receiving the subscription command, the main device firstly returns the information of all devices in the routing list of the main device, then the subscription command is put into the subscription list of the devices, when the information in the list changes, the main device trusts that the devices send notification messages, and the content of the messages comprises the latest information of the changed devices in the list;
the new device updates the information in the device routing information table and the target device parameter information table according to the returned information. Recording the IP address of the return equipment in a routing table, setting the main equipment as conversion equipment, wherein the routing path is indirect arrival, and the routing times are equal to the original routing times plus 1; and simultaneously, the new equipment monitors the notification message of the main equipment, and if the notification message is received, the routing list is updated.
2. And subscribing the online and offline information of all the devices.
The new device sends subscription online and offline messages to the devices with the routing times of 1 in all the routing lists;
if the other equipment is offline or online again after a period of time, sending an online and offline notification message to the new equipment;
and after acquiring the notification message, the new device updates the routing list of the new device. If the main device sends the offline notification, the routing information of the main device is deleted, and the routing information of other devices taking the main device as the switching device is also deleted.
3. And sending the online inquiry message.
When a device suddenly loses power, the offline notification message cannot be sent to other devices, and the routing tables in other devices cannot be updated, so online query is very necessary.
The new device sends device on-line inquiry information to all devices at regular intervals according to the information in the routing table; if the routing times is 1, directly sending the routing information; if the number is more than 1, sending the data through the switching equipment;
other equipment feeds back the online information after obtaining the query information;
if no feedback exists in a certain time when the new equipment sends the online inquiry message, the new equipment sends the online inquiry message again, and the maximum number of times does not exceed 3 times. If no feedback exists, the equipment is proved to be disconnected, and the equipment list information is deleted;
if the new device is the main device, in the running process, if other devices join the device group, judging whether the devices are allowed to join; if so, the information in the routing list is updated.
In summary, the method for implementing wireless routing between the master device group and the slave device group based on the IGRS protocol has the advantages that:
1. data transmission and resource sharing between any master and slave equipment groups in a wireless network can be realized, and the distance of data transmission is maximized.
2. Any equipment of the wireless network can be directly communicated without setting a plurality of wireless transfer and routing equipment and regular maintenance.
Drawings
Fig. 1 shows a data packet format transmitted based on the routing implementation method of the present invention;
fig. 2 is a schematic flow chart illustrating the process of initializing and generating an IP address for a new on-line device.
Detailed Description
Embodiment 1, with reference to fig. 1 and fig. 2, applies the method for implementing wireless routing between master and slave device groups based on the IGRS protocol, and after a new online device, that is, a new device that has not been added and does not belong to any master and slave device groups enters a network, first generates and updates a "device routing information table" and a "target device parameter information table".
The procedure for generating and updating the "device routing information table" and the "target device parameter information table" is,
in a first step, the IP address of the new online device is determined, as shown in figure 2,
carrying out power-on hardware detection, detecting whether wired or wireless connection is adopted, and configuring (701);
performing system initialization (702):
initialization of IGRS protocol stack (703): registering equipment of a protocol stack;
according to DHCP protocol, apply for IP address (704) to DHCP server, utilize gatekeeper as DHCP server in this telephone network system, gatekeeper distributes and decides to send the IP address according to the network rule;
performing automatic network access registration and information subscription according to an IGRS protocol;
and secondly, determining a device routing information table of the new online device.
At this time, the device routing information table and the target device parameter information table of the new online device are both empty.
And thirdly, the device carries out multicast advertisement.
According to the IGRS protocol, the information of the device is released to all devices in the network in the form of multicast advertisements.
After other devices obtain the broadcast information, updating own routing tables, recording the IP addresses of the devices, and setting the new devices as conversion devices, wherein the routing path is direct arrival, and the routing times are 1.
And fourthly, inquiring the information of all the devices in the network.
The new on-line equipment sends inquiry command information to the network in a multicast mode to obtain main equipment information in all the main equipment and slave equipment groups and then marks of the main equipment;
other main devices feed back own 'target device parameter information table' after receiving the query command information;
and the new on-line equipment updates corresponding information in the original blank equipment routing information table and the original blank target equipment parameter information table according to the returned target equipment parameter information table.
The IP address returned to the main device is recorded in a device routing information table, and the new on-line device is set as a conversion device, the routing path is direct arrival, and the routing frequency is 1;
and fifthly, updating the information table and performing online query detection.
Subscribing to a routing list of the master device;
subscribing the online and offline information of all the devices;
and sending the online inquiry message.
The method for realizing wireless routing between the master equipment group and the slave equipment group based on the IGRS protocol comprises the following specific steps:
data transmission between two devices is based on establishing a communication pipeline;
first, selection of a target device.
And acquiring the IP address and the equipment description of the target equipment according to the parameter information table of the target equipment, and providing information for the construction of the routing data packet.
And secondly, constructing a corresponding routing data packet.
The data transmitted specifically is stored in the routing data packet and transmitted.
The generation rule of the routing data packet is that when the device sends information by using a routing mechanism, the wireless network realizes network transmission of data by adopting a TCP/IP protocol, the routing data packet is the text of the TCP packet, and the target IP address in the TCP and the IP packet is set as the IP address of the switching device of the source device.
As shown in fig. 1, the routing packet has a structure that,
the routing equipment can know the routing data packet as a packet header and a mark of the routing data packet is FB FE after obtaining the data packet by judging the packet header;
a source device IP address, an IP address of a device that sends data;
a target device IP address, a device IP address at which data is finally received;
data text content;
forwarding times, the forwarding times of the routing data packet;
the check bit occupies 2 bytes, the calculation method is that the IP address of the source equipment, the IP address of the target equipment, the data text and the forwarding times are carried out, the check bit is hexadecimal, and overflow is carried out when the check bit is full;
the end of the packet, the end of the data packet, is marked FC.
And thirdly, determining the optimal routing path.
And inquiring a routing table of the source equipment according to the code number of the target equipment.
There are many routing paths from one device to another, and the optimal path is selected by,
preferentially selecting the path with the least routing times;
if the data are the same, the wireless network bandwidth of the passing routing equipment is detected, the lowest bandwidth of the routing equipment of the two paths is compared, and one path with the higher bandwidth is preferentially selected.
If the data is still the same, the sending equipment randomly selects the data.
And fourthly, determining the final forwarding equipment.
The sending information needs to be forwarded by the routing equipment, the source equipment sends the data packet to the switching equipment, and the source equipment does not stipulate the next switching equipment, but the previous switching equipment determines the next switching equipment according to the following rules.
The selection rule of the switching equipment is that for the directly arrived connection, the target equipment is the switching equipment;
if only one switching device is available, the switching device is directly adopted;
if there are multiple transit devices, this requires selecting the best routing process according to the rule, and the transit device of the best routing process is the best transit device.
And monitoring whether a pipeline required by a user can be established between the source equipment and the forwarding equipment, and if not, selecting other switching equipment.
And fifthly, forwarding the data.
And establishing a communication pipeline based on an IGRS protocol between the two devices.
The source equipment determines the optimal path and the switching equipment through the equipment routing information table and sends the data packet to the switching equipment;
the switching equipment analyzes the data packet, obtains the forwarding times and the address of the target equipment, and reconstructs the data packet after adding one to the forwarding times;
inquiring an equipment routing information table of the equipment, acquiring an optimal path reaching the target equipment and the next switching equipment, and retransmitting the data packet;
and so on until the target device is reached;
when the data of the forwarding times is larger than 54, the data is proved to be in a dead loop state in the wireless network, and the routing equipment discards the data packet and sends error information to the source equipment.
And sixthly, receiving the data by the target equipment.
After receiving the routing data packet, the target device judges whether the IP address in the routing data packet is the IP address of the device; if yes, stopping forwarding and processing data; if not, forwarding continues.
And step seven, the target equipment feeds back corresponding information.
After receiving the information, the target device sends back corresponding feedback information to prove that the routing data packet is correctly received.
The data feedback process of the target device is the same as the process until the source device receives corresponding feedback data information.
The above is the basic content of the method for implementing wireless routing between the master device group and the slave device group based on the IGRS protocol.
Claims (4)
1. A method for realizing wireless routing between a master device group and a slave device group based on IGRS protocol is characterized in that: based on the wireless routing implementation method, the switching equipment in the determined optimal path is the main equipment in the main equipment group and the sub equipment group between two pieces of equipment capable of establishing a communication pipeline.
2. The method for implementing wireless routing between master and slave device groups according to claim 1, wherein: the flow of the wireless routing implementation method is that,
firstly, selecting target equipment;
according to the parameter information table of the target equipment, the IP address and the equipment description of the target equipment are obtained, and information is provided for the construction of the routing data packet;
secondly, constructing a corresponding routing data packet;
the generation rule of the routing data packet is that when the device sends information by using a routing mechanism, the wireless network realizes network transmission of data by adopting a TCP/IP protocol, the routing data packet is the text of the TCP packet, and the target IP address in the TCP and the IP packet is set as the IP address of the switching device of the source device:
thirdly, determining an optimal routing path;
inquiring a routing table of the source equipment according to the code number of the target equipment;
fourthly, determining the final forwarding equipment;
the sending information needs to be forwarded by the routing equipment, the source equipment sends the data packet to the switching equipment, the source equipment does not stipulate the next switching equipment, but the previous switching equipment determines the next switching equipment according to the following rules;
fifthly, forwarding the data;
establishing a communication pipeline based on an IGRS protocol between two devices; the source equipment determines the optimal path and the switching equipment through the equipment routing information table and sends the data packet to the switching equipment; the switching equipment analyzes the data packet, obtains the forwarding times and the address of the target equipment, and reconstructs the data packet after adding one to the forwarding times; inquiring an equipment routing information table of the equipment, acquiring an optimal path reaching the target equipment and the next switching equipment, and retransmitting the data packet;
and so on until the target device is reached;
sixthly, the target equipment receives data;
after receiving the routing data packet, the target device judges whether the IP address in the routing data packet is the IP address of the device; if yes, stopping forwarding and processing data; if not, continuing forwarding;
and step seven, the target equipment feeds back corresponding information.
After receiving the information, the target device sends back corresponding feedback information to prove that the routing data packet is correctly received.
3. The method for implementing wireless routing between master and slave device groups according to claim 2, wherein: in the process of determining the optimal routing path, the selection principle of determining the optimal path is to preferentially select a path with the least routing times;
if the data are the same, detecting the wireless network bandwidth of the passing routing equipment, comparing the lowest bandwidth of the routing equipment of the two paths, and preferentially selecting one path with high bandwidth;
if the data is still the same, the sending equipment randomly selects the data.
4. The method for implementing wireless routing between master and slave device groups according to claim 2 or 3, wherein: the selection rule for the forwarding device in said determining the final forwarding device is,
for a directly reached connection, the target device is a switching device;
if only one switching device is available, the switching device is directly adopted;
if a plurality of switching devices exist, the optimal routing process is selected according to the rule, and the switching device in the optimal routing process is the optimal switching device;
and monitoring whether a communication pipeline required by a user can be established between the source equipment and the forwarding equipment, and if not, selecting other switching equipment. 5. The IGRS protocol-based wireless routing implementation method between master and slave device groups as claimed in claim 4, wherein: updating the device routing information table and the target device parameter information table of each IGRS device at regular time, and realizing online query;
the new equipment sends equipment on-line inquiry information to all the equipment at regular intervals according to the information in the routing table; if the routing times is 1, directly sending the routing information; if the number is more than 1, sending the data through the switching equipment;
other equipment feeds back the online information after obtaining the query information;
if no feedback exists in a certain time when the new equipment sends the online inquiry message, the new equipment sends the online inquiry message again, and the maximum number of times does not exceed 3 times. If there is still no feedback, the device is proved to have been dropped, and the device list information is deleted.
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| CNB2004100757802A CN100542167C (en) | 2004-12-29 | 2004-12-29 | Wireless route implementing method between the master-slave equipment group based on the IGRS agreement |
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| CN100542167C CN100542167C (en) | 2009-09-16 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102036334A (en) * | 2009-09-30 | 2011-04-27 | 北京中能普瑞技术有限公司 | Routing control method of radio sensor network for mine |
| CN113364838A (en) * | 2021-05-26 | 2021-09-07 | 中建三局智能技术有限公司 | MQTT-based equipment ad hoc network method and system |
| CN114866607A (en) * | 2022-04-28 | 2022-08-05 | 中建三局智能技术有限公司 | Networking transmission method and device based on voice coding technology |
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2004
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102036334A (en) * | 2009-09-30 | 2011-04-27 | 北京中能普瑞技术有限公司 | Routing control method of radio sensor network for mine |
| CN113364838A (en) * | 2021-05-26 | 2021-09-07 | 中建三局智能技术有限公司 | MQTT-based equipment ad hoc network method and system |
| CN113364838B (en) * | 2021-05-26 | 2022-08-26 | 中建三局智能技术有限公司 | Equipment ad hoc network method and system based on MQTT |
| CN114866607A (en) * | 2022-04-28 | 2022-08-05 | 中建三局智能技术有限公司 | Networking transmission method and device based on voice coding technology |
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| CN100542167C (en) | 2009-09-16 |
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